51011051155112 has 32 divisors (see below), whose sum is σ = 97466966166600. Its totient is φ = 25020024217344.

The previous prime is 51011051155111. The next prime is 51011051155177. The reversal of 51011051155112 is 21155115011015.

It can be written as a sum of positive squares in 4 ways, for example, as 35471482170436 + 15539568984676 = 5955794^2 + 3942026^2 .

It is not an unprimeable number, because it can be changed into a prime (51011051155111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7761083 + ... + 12737994.

Almost surely, 2^{51011051155112} is an apocalyptic number.

It is an amenable number.

51011051155112 is a deficient number, since it is larger than the sum of its proper divisors (46455915011488).

51011051155112 is a wasteful number, since it uses less digits than its factorization.

51011051155112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20505005 (or 20505001 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 29.

Adding to 51011051155112 its reverse (21155115011015), we get a palindrome (72166166166127).

The spelling of 51011051155112 in words is "fifty-one trillion, eleven billion, fifty-one million, one hundred fifty-five thousand, one hundred twelve".